CN214781936U - Air-cooled blast furnace distributing device - Google Patents
Air-cooled blast furnace distributing device Download PDFInfo
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- CN214781936U CN214781936U CN202121160080.9U CN202121160080U CN214781936U CN 214781936 U CN214781936 U CN 214781936U CN 202121160080 U CN202121160080 U CN 202121160080U CN 214781936 U CN214781936 U CN 214781936U
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Abstract
The utility model belongs to the technical field of blast furnace distributing device air cooling, and relates to an air-cooled blast furnace distributing device, which comprises a distributing device body and a rotary cylinder rotationally connected with the distributing device body, wherein the rotary cylinder is provided with a cooling air duct and an air supply device; the air supply device is provided with an air inlet and an air outlet, and the air inlet is communicated with the inner cavity of the distributing device; one end of the cooling air duct is connected with the air outlet, and the other end of the cooling air duct is communicated with the inner cavity of the distributing device. The utility model discloses a set up air supply arrangement and cooling duct in the distributing device, nitrogen gas circulation in the air supply arrangement acceleration distributing device flows, simultaneously through cooling duct, with the directional assigned position of introducing of cooling gas, realizes local fixed point cooling, improves cooling efficiency.
Description
Technical Field
The utility model belongs to the technical field of blast furnace distributing device forced air cooling, a forced air cooling blast furnace distributing device is related to.
Background
Blast furnaces using bell-less top distributors have been known for nearly 50 years and are commonly referred to as "water-cooled gear boxes" or "gas-tight boxes" in China. At present, various types of distributing devices exist, and the distributing devices have the common characteristic that rotating cylinder structures exist, the sealing of the fixed parts of the rotating cylinder and the distributing device is sealed by nitrogen, and meanwhile, the nitrogen can also be used as cooling gas. The rotary cylinder is a key transmission part of the blast furnace distributor, transmission parts on the rotary cylinder are positioned in a distributor cavity and are eroded by high-temperature gas of the blast furnace, and if the rotary cylinder and parts arranged on the rotary cylinder are not cooled, the parts are deformed by heating to cause the failure of the parts.
In the prior art, cooling gas is introduced into the distributing device cavity to cool the distributing device cavity, but the cooling gas cannot flow at a high speed, so that the heat exchange efficiency is very low, and the distributing device rotating cylinder and parts on the distributing device rotating cylinder cannot be effectively cooled. Later, a water cooling structure is adopted, for example, in European patent publication No. EP0116142B1, the water cooling structure adopts an open water cooling mode for cooling, namely, an annular water tank is arranged above a rotary drum, a water inlet is aligned with the water tank for supplying water, a water level meter and other detection elements are arranged for monitoring the water level of the annular water tank, the water is prevented from overflowing into an inner cavity of the distributing device and a blast furnace, the bottom of the water tank is communicated with a part needing cooling on the rotary drum, the water flows downwards in the gravity direction for cooling, and finally, the water is discharged into a fixed annular water tank at the lower part of the distributing device and is discharged out of the distributing device through a pipeline. However, it has the following disadvantages: dust easily gets into the cooling water route, and simultaneously because of the velocity of water is slow, cooling efficiency is lower, and the energy consumption is great, and the water route is also often scale deposit and is blockked up, and the basin is also long-pending grey seriously, and the maintenance cost is also higher.
If chinese patent No. CN102483304B, it adopts an annular rotary joint, and performs sealed transformation on the original annular water tank structure, and sets up a fixed loop and a rotating loop, and sets up a sealing structure between the fixed loop and the rotating loop, so that the pressure water can enter the rotating cylinder to cool the components, and then return to the fixed loop, and form closed water cooling, but the structure of the closed water cooling is complex, and the cost is high.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at solving the problem that the cooling efficiency of the rotary drum of the existing distributing device is low, and provides an air-cooled blast furnace distributing device.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a blast furnace distributing device of air cooling, including distributing device body, rotary drum rotatably connected with distributing device body, there are cooling air ducts, blast apparatus on the said rotary drum; the air supply device is provided with an air inlet and an air outlet, and the air inlet is communicated with the inner cavity of the distributing device; one end of the cooling air duct is connected with the air outlet, and the other end of the cooling air duct is communicated with the inner cavity of the distributing device.
This basic scheme is through setting up air supply arrangement and cooling duct on a rotatory section of thick bamboo, and air supply arrangement sucks the cooling nitrogen gas of distributing device itself, and the circulation of nitrogen gas in the distributing device inner chamber is flowed with higher speed, because a rotatory section of thick bamboo is the high spare part that generates heat, will cool off the oriented rotary section of thick bamboo of introducing of nitrogen gas through the cooling duct, cools off it, improves rotatory section of thick bamboo cooling efficiency to air supply arrangement can adopt just reversing, and the homoenergetic realizes circulative cooling.
Further, the air supply device comprises a fan, a fan shaft and a roller; the fan is arranged on the rotary cylinder; one end of the fan shaft is connected with the fan, and the other end of the fan shaft is connected with the roller; an annular roller path is also arranged in the inner cavity of the distributing device; the roller is in rolling connection with the annular roller path and drives the fan shaft to rotate; the roller rolls on the ring roller way to drive the fan shaft to rotate, so that the fan is driven to rotate.
Further, the annular roller path is fixedly connected with the distributing device body, and the roller is driven by the rotating cylinder to roll on the annular roller path; utilize the relative rotation relation of a rotary drum and a distributing device body, the rotation of the rotary drum is used as power to drive the fan to rotate, and an independent power source is not required to be provided for the air supply device.
Further, a power device is also arranged on the distributing device body; the annular roller path is rotationally connected with the distributing device body or the rotary cylinder; the power device is connected with the annular roller path and drives the annular roller path to rotate, and the power device drives the annular roller path to realize the rotation of the roller, so that the fan is driven to operate; the rotating direction of the annular roller path can be opposite to that of the rotating cylinder, so that the rotating speed of the roller can be increased, and the nitrogen circulating cooling is accelerated.
Furthermore, the surface of the roller is a cylindrical surface, a drum-shaped surface or a tooth surface, and the shape of the annular raceway is matched with that of the roller; the surfaces of the roller path and the roller wheel can adopt materials or structures for enhancing friction force, such as rubber materials, and the surfaces adopt a knurled structure with pits.
Furthermore, the air supply device also comprises a speed changer, the fan shaft is connected with the fan through the speed changer, the speed changer is fixedly connected with the rotating cylinder, the rotating speed of the fan is increased through the speed changer, and the air flow is accelerated.
Further, the distributing device body comprises a driving device and a fixed shell; the rotary cylinder is rotationally connected with the fixed shell; the driving device is arranged on the fixed shell and connected with the rotating cylinder to drive the rotating cylinder to rotate.
Further, the cooling air duct is arranged on the outer wall of the rotary cylinder; a labyrinth structure is arranged in the cooling air duct; the labyrinth structure makes cooling gas and a rotary drum area of contact increase, and then promotes the cooling effect, and labyrinth structure can improve the leakproofness simultaneously.
Further, a chute assembly is further arranged on the rotary cylinder, and the chute assembly comprises a chute and a trunnion; the trunnion is fixedly connected with the chute, and the chute is arranged in the rotary cylinder and is rotationally connected with the rotary cylinder through the trunnion; a cooling hole is arranged in the trunnion and is connected with the air outlet through a pipeline; the cooling hole is communicated with the inner cavity of the distributing device; the trunnion is higher in temperature due to rotary motion, and the trunnion is locally cooled by the air supply device.
Furthermore, the number of the air supply devices is at least 1, and the number of the air supply devices can be adjusted according to actual requirements so as to improve the cooling effect.
The beneficial effects of the utility model reside in that:
1) in the utility model, the cooling nitrogen in the inner cavity of the distributing device is utilized, the air supply device and the cooling air channel are adopted to carry out forced air cooling on the rotating cylinder, and the cooling gas flows at high speed in the cooling air channel with a labyrinth structure, thereby improving the heat exchange efficiency of the cooling gas; and the circulating flow of the cooling nitrogen is accelerated, and the overall cooling efficiency of the distributor is improved. And the directional and fixed point cooling is realized for parts which are easy to heat, and the cooling effect is improved.
2) In the utility model, the fan power source can directly adopt the rotation of the rotary cylinder as the power, the additional investment cost of the power source is not needed, the added components are conventional and simple, and the cost is lower; a separate power driven fan may also be used, which may still operate normally when the spin basket is not rotating.
3) Compared with the existing water cooling structure, the utility model has simple structure and easy implementation.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the distributor of the present invention;
FIG. 2 is a partial sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of section I of FIG. 1;
FIG. 4 is a partial cross-sectional view B-B of FIG. 1;
FIG. 5 is a schematic view of the vertical arrangement of the rollers;
FIG. 6 is a schematic view of the arrangement of the conical rollers in the vertical direction;
FIG. 7 is a schematic view of the arrangement of the conical rollers in the horizontal direction;
fig. 8 is a schematic view of the horizontal arrangement of drum rollers.
Reference numerals: 1-distributor body; 2-rotating the drum; 3-an air supply device; 4-a chute assembly; 5-a labyrinth structure; 6-nitrogen port; 7-a drive device; 8-inner cavity of the distributing device; 101-a rotary drive gear; 102-a rotating drum support; 103-a tilting mechanism; 104-a stationary housing; 105-a fixed chassis; 201-rotating the cylinder; 202-rotating drum chassis; 301-ring raceway; 302-a roller; 303 — an input shaft; 304-a transmission; 305-an air inlet; 306-fan axis; 307-a fan; 308-air outlet; 309-blast pipe; 310-cooling air duct; 311-cooling air duct outlet; 312-cooling holes; 401-trunnion; 402-chute.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Example 1
Referring to fig. 1 to 4, a distributor of an air-cooled blast furnace includes a distributor body 1, a nitrogen port 6 is provided on the distributor body 1, a cooling air duct 310 and an air supply device 3 are provided on a rotary drum 2, an air inlet 305 and an air outlet 308 are provided on the air supply device 3, the air outlet 308 is communicated with the cooling air duct 310 through an air supply pipe 309, and the air inlet 305 is communicated with an inner cavity 8 of the distributor; wherein, the distributing device body 1 comprises a driving device 7, a fixed shell 104 and a rotary cylinder 2; the rotary cylinder 2 is rotationally connected with the fixed shell 104; the driving device 7 is mounted on the stationary housing 104 and drives the rotary drum 2 to rotate by the rotary driving gear 101.
In this embodiment, the rotary drum 2 includes a rotary drum body 201 and a rotary drum chassis 202, the rotary drum body 201 is rotatably connected with the fixed casing 104 through the rotary drum support 102, the rotary drum chassis 202 is welded at the bottom of the rotary drum body 201, the rotary drum body 201 and the rotary drum chassis 202 are provided with a cooling air duct 310, a labyrinth structure 5 is arranged in the middle of the cooling air duct 310, and a cooling air duct outlet 311 is communicated with the distributor inner cavity 8.
In this embodiment, the blowing device 3 includes a fan 307, a fan shaft 306, and a roller 302; the fan 307 is installed on the rotary drum chassis 202, one end of the fan shaft 306 is connected with the fan 307, the other end of the fan shaft is connected with the transmission 304, the roller 302 is fixedly installed on the input shaft 303 of the transmission 304, the transmission 304 is fixedly installed on the rotary drum 2, the fixed chassis 105 is welded at the lower part of the fixed shell 104, the annular roller path 301 is fixedly installed on the fixed chassis 105, and the roller 302 is in rolling fit with the annular roller path 301 and drives the fan shaft 306 to rotate.
Referring to fig. 5 to 8, in the present embodiment, the surface of the roller 302 is a cylindrical surface, a drum-shaped surface or a tooth surface, and the shape of the annular raceway 301 matches the shape of the roller 302; the roller 302 and the annular raceway 301 adopt a friction wheel transmission mode, the roller 302 and the annular raceway 301 realize rolling motion through friction resistance, the arrangement modes are various, and the axis of the roller 302 is vertical or horizontal.
In this embodiment, the distributor body 1 is further provided with a chute assembly 4, and the chute assembly 4 comprises a chute 402 and a trunnion 401; the chute 402 is arranged in the rotary cylinder body 201 and is arranged at the lower part of the rotary cylinder body 201 through two trunnions 401, and the driving device 7 drives the chute 402 to rotate around a central axis A1 of the trunnions 401 in a limited angle through the tilting mechanism 103; the trunnion 401 is provided with a cooling hole 312, and the cooling hole 312 is communicated with the air outlet 308 through an air supply pipe 309 to cool the trunnion 401; the cooling holes 312 communicate with the distributor chamber 8.
Example 2
This example differs from example 1 in that: the annular raceway 301 is rotatably mounted on the fixed chassis 105 through a slewing bearing, a gear is arranged on the excircle of the annular raceway 301, and a motor is further mounted on the fixed chassis 105 and drives the annular raceway 301 to rotate through the gear.
When the rotary drum 2 does not rotate, the motor can drive the annular raceway 301 to rotate, so that the roller 302 is driven to rotate through friction, and the fan 307 can continuously operate.
Example 3
This example differs from example 2 in that: the annular raceway 301 is rotatably mounted on the rotary cylinder 2 through a rotary bearing, and a motor is mounted on the fixed chassis 105 and drives the annular raceway 301 to rotate, so that the roller 302 is driven to rotate through friction, and the fan 307 is continuously operated.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an air-cooled blast furnace distributing device, includes the distributing device body, rotates the rotary drum of being connected, its characterized in that with the distributing device body: the rotary cylinder is provided with a cooling air duct and an air supply device; the air supply device is provided with an air inlet and an air outlet, and the air inlet is communicated with the inner cavity of the distributing device; one end of the cooling air duct is connected with the air outlet, and the other end of the cooling air duct is communicated with the inner cavity of the distributing device.
2. The air-cooled blast furnace distributor according to claim 1, characterized in that: the air supply device comprises a fan, a fan shaft and a roller; the fan is arranged on the rotary cylinder; one end of the fan shaft is connected with the fan, and the other end of the fan shaft is connected with the roller; an annular roller path is also arranged in the inner cavity of the distributing device; the rolling wheels are in rolling connection with the annular roller paths and drive the fan shaft to rotate.
3. The air-cooled blast furnace distributor according to claim 2, characterized in that: the annular roller path is fixedly connected with the distributing device body, and the roller is driven by the rotating cylinder to roll on the annular roller path.
4. The air-cooled blast furnace distributor according to claim 2, characterized in that: the distributing device body is also provided with a power device; the annular roller path is rotationally connected with the distributing device body or the rotary cylinder; and the power device is connected with the annular roller path and drives the annular roller path to rotate.
5. The air-cooled blast furnace distributor according to claim 2, characterized in that: the surface of the roller is a cylindrical surface, a drum-shaped surface or a tooth surface, and the shape of the annular raceway is matched with that of the roller.
6. The air-cooled blast furnace distributor according to claim 2, characterized in that: the air supply device further comprises a speed changer, the fan shaft is connected with the fan through the speed changer, and the speed changer is fixedly connected with the rotary cylinder.
7. The air-cooled blast furnace distributor according to claim 1, characterized in that: the distributing device body comprises a driving device and a fixed shell; the rotary cylinder is rotationally connected with the fixed shell; the driving device is arranged on the fixed shell and connected with the rotating cylinder to drive the rotating cylinder to rotate.
8. The air-cooled blast furnace distributor according to claim 1, characterized in that: the cooling air duct is arranged on the outer wall of the rotary cylinder; and a labyrinth structure is arranged in the cooling air duct.
9. The air-cooled blast furnace distributor according to claim 1, characterized in that: the rotary drum is also provided with a chute assembly, and the chute assembly comprises a chute and a trunnion; the trunnion is fixedly connected with the chute, and the chute is arranged in the rotary cylinder and is rotationally connected with the rotary cylinder through the trunnion; a cooling hole is arranged in the trunnion and is connected with the air outlet through a pipeline; the cooling hole is communicated with the inner cavity of the distributing device.
10. The air-cooled blast furnace distributor according to claim 1, characterized in that: the number of the air supply devices is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121160080.9U CN214781936U (en) | 2021-05-27 | 2021-05-27 | Air-cooled blast furnace distributing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121160080.9U CN214781936U (en) | 2021-05-27 | 2021-05-27 | Air-cooled blast furnace distributing device |
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| Publication Number | Publication Date |
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| CN214781936U true CN214781936U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121160080.9U Active CN214781936U (en) | 2021-05-27 | 2021-05-27 | Air-cooled blast furnace distributing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022247077A1 (en) * | 2021-05-27 | 2022-12-01 | 中冶赛迪工程技术股份有限公司 | Air-cooled blast furnace distributor |
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2021
- 2021-05-27 CN CN202121160080.9U patent/CN214781936U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022247077A1 (en) * | 2021-05-27 | 2022-12-01 | 中冶赛迪工程技术股份有限公司 | Air-cooled blast furnace distributor |
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